The Boiler Upgrade Scheme (BUS) is a UK government initiative that provides upfront capital grants to help property owners in England and Wales replace fossil fuel heating (gas, oil, LPG, electric) with low-carbon systems.

Grant Amounts

Air/Ground/Water Source Heat Pumps: £7,500
Off-Gas Grid Uplift: £9,000 for eligible oil/LPG homes
Biomass Boilers: £5,000 (rural, off-gas properties only)

Eligibility
You must own the property (including second homes, business premises, and private lets) and have a valid Energy Performance Certificate (EPC). Standard new-builds and social housing are excluded, but self-builds qualify.

Key Deadlines
Commissioning Rule: The installer must apply for the voucher within 120 days of commissioning the heat pump.
Installation Window: Once approved, installers have 3 months to complete air source heat pumps and 6 months for ground source heat pumps.
Off-Gas Uplift Window: The £9,000 grant rate applies to applications submitted up to 31 March 2027.
Scheme Expiry: The overall scheme runs until 31 December 2027.

Applications are installer-led; an MCS certified installer applies via Ofgem and deducts the grant directly from your invoice.

More information: https://www.gov.uk/apply-boiler-upgrade-scheme/check-if-youre-eligible